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Earnings Per Share

EPS = Net Income ÷ Shares Outstanding

EPS is how much profit belongs to each share. Same company profit, more shares, thinner slice for you.

01 Feel it first

Same pie, different slices

Profit stays fixed at $100M. Click Issue shares or Buy back and watch the pie — more slices make each share thinner; fewer slices make each share richer.

Total company profit fixed at $100M
20M shares · profit still $100M
Earnings per share
$5.00
$100M ÷ 20M shares

02 Break the intuition

The company earned more, but EPS fell

Higher total profit does not always mean higher EPS. Guess what changed, then reveal the share counts.

YEAR 1
$80M
net income
Shares outstanding10M
Income ÷ shares80M ÷ 10M
$8.00 EPS
Thicker slice
YEAR 2
$100M
net income
Shares outstanding25M
Income ÷ shares100M ÷ 25M
$4.00 EPS
Diluted
Profit rose from $80M to $100M, but the company issued new shares. More slices, thinner each. EPS is per share, not the whole pie — Year 2 looks worse on EPS even though the business earned more.

03 Build the formula

Same profit, different share count

Net income stays fixed. Toggle share-count scenarios and watch EPS change with the divisor alone.

$400M ÷ $200M = $2.00
EPS
$2.00

Net income divided by shares equals EPS. Same earnings, more shares, thinner slice. Fewer shares, richer slice.

04 Watch the path

Same endpoint, different story

Two companies land at the same EPS. One got there by growing profit. The other mostly bought back shares.

Pick a path
Press play
$1.50

Illustrative 10-year EPS paths ending at $4.00.

Pick a path, then press Play to watch the years fill in.

05 Two flavors

Basic vs diluted EPS

Same profit, different share count. Basic counts shares that exist today. Diluted counts shares that could exist later.

Uses the average number of shares that already exist during the period. Cleaner and simpler, but it ignores stock options and convertible bonds that can create more shares later.

06 The catch

Rising EPS needs a reason

EPS can climb because the business got better, because the company bought back shares, or because a boom year inflated profits. Look at the path, not one print.

Growth
+18%
Stable
+4%
Cyclical
−12%

Illustrative trailing EPS change patterns — not live sector data.

07 Check yourself

Five quick checks

Question 1 of 5
Quick checkA company earns $50M with 10M shares outstanding. Its EPS is:
$5 is right. EPS = profit ÷ shares = 50M ÷ 10M = $5.

08 Where it breaks

When EPS lies to you

Buybacks can fake growth

Buying back shares lifts EPS even if total profit stayed flat. Always ask: did the business earn more, or did the share count just shrink?

One-time gains juice a year

Selling a building or booking a tax credit can make one year look great. Trailing EPS jumps; the everyday business did not get better.

Share counts are averages

Companies use a weighted average of shares across the year. Mid-year issues and buybacks blur the story versus a single snapshot count.

Losses make EPS negative

If the company loses money, EPS is negative and P/E stops making sense. Use other tools until earnings turn positive.

Look up a real EPS.

Open any of 70,000 stocks and see live trailing EPS, growth, and the share count behind it. Then screen the market by earnings in one click.